Additional file 2: of Self-illuminating quantum dots for non-invasive bioluminescence imaging of mammalian gametes

Figure S2. Transmission Electron Microscope imaging of labeled spermatozoa. Cross-section heads of spermatozoa labeled with functionalized (blue frame) and non-functionalized (black frame) QD-BRET are shown. Arrows indicate the localization of quantum dot (QD) core and higher accumulation can be seen in functionalized, compared to non-functionalized sections.